Geometry

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Across
  1. 3. 180°
  2. 5. more than 0° less than 90°
  3. 7. 360°
  4. 8. more than 90° less than 180°
  5. 10. lines which intersect
  6. 11. has two end points
  7. 12. has only one end point
Down
  1. 1. 90°
  2. 2. never meet each other
  3. 4. more than 180° less than a whole
  4. 6. neverending
  5. 9. meets each other